https://hal-ifp.archives-ouvertes.fr/hal-02437406 Contributor : Nadine CouëdelConnect in order to contact the contributor Submitted on : Monday, January 13, 2020 - 5:42:56 PM Last modification on : Tuesday, January 14, 2020 - 1:44:38 AM Long-term archiving on: : Tuesday, April 14, 2020 - 6:27:45 PM